[llvm] [AA] Refine ModRefInfo taking into account `errnomem` location (PR #157495)

[Antonio Frighetto via llvm-commits]

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@@ -17,7 +17,7 @@ define void @test() {
   ret void
 }
 
-declare void @writeonly_void() memory(write)
+declare void @writeonly_void() memory(write, errnomem: none)
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antoniofrighetto wrote:

We were treating noalias arguments as may alias errno thus writeonly_cse_intervening_noalias_store was failing, now reverted this.

https://github.com/llvm/llvm-project/pull/157495